China Seas (1935)
The Poster of film is shown
Mentioned as part of Jean Harlow's filmography.
After Seth says that a romantic encounter that he and Jessica witnessed reminds him of a love scene from a Clark Gable / 'Jean Harlow' movie, Jessica asks him what he knows about those movies and Seth asks if she would like a rundown of Red Dust (1932), Saratoga (1937), China Seas (1935), or Wife vs. Secretary (1936).
Poster seen at the movie theater
The main character tells the plot of the movie
Mentioned by title.